介词的基本用法与习惯搭配He came back late, ________ which time all the guests had already left
Many residents are supposed to ____ the motorway. It is not a wise decision.
When paying for a taxi, he never looks at his wallet –just takes out one note ____ and hands it over.
The teacher made____ her duty to care for the lives and study of her students.
The competition between the 2 restaurants was______.
—Excuse me, sir, ________ —I’d like a cup of coffee and two pieces of bread.